Improvement



S. S B 4 heets Sh eetl.

Machines for jointing Staves.

Patented -Jan.7,1873

V WITNESSES. INVENTOR AM. PHOTOLITHUGMFi/IL cow. xmsaonwsls P1706555.

4-Sh-eets-- Sheet 2. 3.. S. GRAY. L Machines for Mining Staves.

No. 134,596. a Patented 12111.7, 1873.

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S. S. GRAY.

Machines for jointing Staves.

10,134,596. A Patented l an.'7, 1873 FIGS.

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Machines for jointing St aves.

10,134,596. Patentedjan.7, l873 8 k3 FIG.5.I-

WITNESSES. 4

. FFICE.

SOLOMON s. GRAY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FQR JOINTENG ST'AVES.

Specification forming part of Letters Patent No. 134,596, dated January7, 1873.

To all whom it may concern.-

Be it known that I, SOLOMON S. GRAY, of Boston, in the county of Sufiolkand State of Massachusetts, have invented certain new and usefulImprovements in Machines for J ointin g Barrel-Staves, of which thefollowingis a specification:

My invention relates to a machine for jointin g staves, arranged tojoint both edges at the same time, giving thereto the proper bilge andbevel; and it consists, first, in the employment of a chain-feed bedhaving secured thereon one or more pattern-forms, upon which the staveto be jointed is placed and secured by suitable dogs and spurs. Itfurther consists in the use, in combination with a chainfeed bed havingone or more pattern-forms secured thereon, of a pair of revolvingcutters, one upon either side of said chain-bed and opposite to eachother, mounted upon horizontal shafts arranged to revolve in suitablebearings upon sliding frames so arranged in relation to and controlledby the pattern-forms carried by said feed-chain that the position ofsaid cutters shall be controlled by said pattern-forms, to give theproper form or bilge to the stave, said frame being made to bear againstthe forms 011 the feed-chain by means of a lever and weight, or itsequivalent. It also consists in the use, in combination with achain-feed. bed having one or more pattern-forms made in sectionssecured thereon, of ayieldingpressure-bar, under which the stave passeswhile the cutters are acting thereon, for the purpose of holding thestave firmly on the patterni'orm, whatever may beits thickness. Itfurther consists in the use, in combinati n with a chain-feed bed havingone or more pattern-forms made in sections and secured thereon, and oneor more rotary cutters controlled thereby, of a pivoted shoe attached tothe frame of said cutters in such a manner that said shoe may beadjusted with relation to said cutter so as to vary the distance of saidcutter from the center line of the stave, and so that said shoe mayaccommodate itself to the varying angle of the curved edge of thepattern-forms. It further consists in the application to one of saidshoes of a lever, wedge, or other suitable device by means of which thecutter-head may be readily and easily adjusted to the proper positionfor jointing a wide or a narrow stave, While at the same time saidcutter-head may be slightly adjusted by means of a screw for the moreaccurate setting of the cutter-head. It

also consists in the formation of a groove in either edge of the varioussections of the chain-feed bed, in combination with guideplates securedto the fixed bed, and having formed thereon tongues to fit said grooves,

thereby preventing any inequalities in the upper surface of said bed.

Figure 1 is a plan of a machine embodying my invention, with a portionof the pressurebar broken away in order to show more clearly the otherparts. Fig. 2 is a side elevation. Fig. 3 is a transverse section online m w on Figs. 1 and 2. Fig. 4. is a transverse section on line y 3on Figs. 1 and 2. Fig. 5 is a plan of one of the cutter-heads, its shaftand frame showing more clearly the adjusting mechanism 5 and Fig. 6 is asection on line z z on Fig. 5.

In the drawing, A is the table or fixed bed of the machine, made in theform of a cross, and mounted on the legs B B, which, together with saidtable, constitute the frame of the machine. The table A has alongitudinal groove, a, formed in its upper side to receive and guidethe links of the traversing chain-feed bed 0. This traversing bed is anendless-chain belt, a portion of the links of which have formed on orsecured to their outer sides short sections of a flat plate of such alength and so fitted as to form a continuous flat bed from end to end ofthe table, said chain-bed being mounted at either end of the machineupon suitable chainwheels so arranged and operated as to give motion tothe bed in the desired direction. The upper surface of the bed is keptin a level position and made to travel in a straight line by means ofthe guide-plates D D secured to the upper side of the table A, andprovided with a tongue upon their inner edges to lit a correspondinggroove upon either edge of the chain-bed, as shown in Figs. 3 and 4. Tothe upper side of this chain-bed are secured, by

screws or other suitable means, a series of pattern-forms, E E, made insections corresponding to the sections of the chain-bed, the sides oredges of said forms being curved ac- 1 cording to the bilge it isdesired to give the stave, which serve the purpose of guides to controlthe position of the cutters while the stave is passing them. Upon eachpatternform are secured two dogs, 0, and the spurs c, by means of whichthe stave is registered in proper position and held while the cuttersare operating thereon. The wings of the bed A have fitted thereto framesF F in such a manner that they may move toward or from the stave atright angles to the line of motion of the chain-bed. The frames F F eachhave attached thereto a pivoted shoe, 1), which bears against the edgeof the form E, against which it is held by the weight G and the leverchaoting upon the frame F, to which said shoe is connected, by means ofthe bar 6, in such a manner that the relation of the shoe to said framemay be varied by means of the screw f. The framesF F are provided withthe bearings F F, in which are mounted the cuttershafts H H, carryingthe pulleys I I and the cutter-heads J J. The cutter-heads J J areprovided with two peripherycutters, g g, for cutting away the bulk ofthe surplus stock, and a face or side cutter, h, for smoothing orfinishing the work, the inner face of said cutter-heads being made inthe form of a fiat cone and the face or finishing cutter h correspondingto said cone for the purpose of giving the proper bevel to the edge ofthe stave. The cutter-shafts H H are placed directly opposite each otheron either side of the chain-bed, with the working faces of theircutting-heads toward each other, so that as the pattern-form, carrying astave secured thereto, is carried forward by the chain-feed bed, thecutters, revolving at a high rate of speed, will joint both edges of thestave at the same time, the cutters following the line of curvature ofthe pattern-form and giving to the stave the same bilge or curvature asthe pattern, but a greater or less width, according to the adjustment ofthe shoe 1) with relation to the cutter-head. Upon the front side of themachine an extra adjustment of the shoe 1) is provided for by cuttingthe bar 0 into two parts and interposing a wedge, i, or other equivalentdevice, by which the two parts may be readily separated, so as to movethe cutter-head further from the center line of the feed-bed, so thatthe adj ustment from a narrow stave to a wide one, or vice versa, may bemade without stopping the machine. L is a pressure-bar, preferably ofwood, mounted on the rods t" i, said rods being supported in the slidingboxes J J, fitted to work in the slots 7; in the stands M, and forceddownward'by the springs l in an obvious manner. The under side of thepressurebar L has formed therein, running longitudinally through thecenter thereof, a groove, m, to allow the dogs 0 to pass, while theportion of the under surface of said bar on either side of the groove mis made to press hard upon the upper side of the stave, by the springsl, to prevent the stave from being thrown on from the former bythecutters. The front lower corner of the pressure-bar Lis curved upward sothat the end of the stave will pass under and lift it. The pressure ofsaid bar is regulated by the set-screws a n n n. N is the driving-shaft,having its bearings in the stands 0 0, and carrying thereon the pulleysO and P, from which the belts p and q lead to the pulleys I I on theeutter'shafts H, to operate the cutter-heads J J. The shaft N alsocarries the pulley Q, from which motionis transmitted by the belt It tothe pulley S on the shaft S, which is mounted in bearings 1' r, andcarries upon one end the pinion s, which works in the spur-gear wheel Ton the shaft U, having its hearings in the stands 1? t. The shaft U alsocarries upon its outer end the pulley V, from which motion is impartedby the belt a to the pulley W on the shaft X, which has its hearings inthe stands a v, and has mount-- ed thereon the chain-wheel Y, whichgives motion to the chain'feed bed O.- At the opposite end of themachine the chain-feed bed passes around the pulley or grooved wheel Z,which is mounted in the stand 10, secured to the under side of the tableA in such a manner that it may be adjusted to take up the slack in thechain by means of the screw to. z is a gage against which the edge ofthe stave is placed to adjust it on the feed-bed.

\Vhat I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. In an organized machine for jointing staves, an endless-chainfeed-bed, having secured thereon one or more pattern-forms by which theposition of the cutters is controlled to give the proper curvature tothe edge of the stave, substantially as described.

2. In combination with an endless chain feed-bed having one or morepattern-forms secured thereon, the cutter-heads J J, arranged andoperating as herein described, for the purpose specified.

3. In combination with an endless-chain feed-bed having one or morepattern-forms secured thereon, the pivoted adjustable shoe 1), attachedto the cutter-frame, substantially as described, for the purposespecified.

4. In combination with an endless-chain feed-bed having one or morepattern-forms secured thereon, the yielding pressurebar L, arranged andoperating substantially as described, for the purpose specified.

5. The combination of the chain-feed bed 0 having one or morepattern-forms, E E, secured thereon, the revolving cutter-heads J Jplaced opposite each other, on either side of said bed and mounted uponsliding frames F F, the adjustable pivoted shoes b attached to saidframes and working in conjunction with the curved edge of the former Eto control the position of the cutter-heads, and the levers d and theweight G for holding said cutters to their work, substantially as hereinset forth and described.

6. In combination with an endless-chain feed-bed having one or morepattern-forms expanding said bar to vary the position of the securedthereon, the guide-plates D D, proshoe 7) with relation to thecutter-head, subvided with a tongue on their inner edges to stantiallyas described. fit a corresponding groove formed in either Executed atBoston this 23d day of August, edge ofsaid feed-bed for the purposes andin 1872.

the manner herein set forth and described. SOLOMON S. GRAY.

7. The combination of the frame F, the bar Witnesses: 0 made in twoparts, and the wedge t inter- S. A. WOOD,

posed between said parts for the purpose of H. E. LOMBARD.

